<template>
  <a-layout>
    <a-layout-content
      :style="{
        background: '#fff',
        padding: '24px',
        margin: 0,
        minHeight: '280px',
      }"
    >
      <a-row :gutter="24">
        <a-col :span="8">
          <p>
            <a-form layout="inline" :model="param">
              <a-form-item>
                <a-button type="primary" @click="handleQuery()">
                  查询
                </a-button>
              </a-form-item>
              <a-form-item>
                <a-button type="primary" @click="add()"> 新增 </a-button>
              </a-form-item>
            </a-form>
          </p>
          <a-table
            v-if="level1.length > 0"
            :columns="columns"
            :row-key="(record) => record.id"
            :data-source="level1"
            :loading="loading"
            :pagination="false"
            size="small"
            :defaultExpandAllRows="true"
          >
            <template #name="{ text, record }">
              {{ record.sort }} {{ text }}
            </template>
            <template v-slot:action="{ text, record }">
              <a-space size="small">
                <a-button type="primary" @click="edit(record)" size="small">
                  编辑
                </a-button>
                <a-popconfirm
                  title="删除后不可恢复，确认删除?"
                  ok-text="是"
                  cancel-text="否"
                  @confirm="handleDelete(record.id)"
                >
                  <a-button type="danger" size="small"> 删除 </a-button>
                </a-popconfirm>
              </a-space>
            </template>
          </a-table>
        </a-col>
        <a-col :span="16">
          <p>
            <a-form layout="inline" :model="param">
              <a-form-item>
                <a-button type="primary" @click="handleSave()"> 保存 </a-button>
              </a-form-item>
            </a-form>
          </p>
          <a-form :model="doc" layout="vertical">
            <a-form-item>
              <a-input v-model:value="doc.name" placeholder="名称" />
            </a-form-item>
            <a-form-item>
              <a-tree-select
                v-model:value="doc.parent"
                style="width: 100%"
                :dropdown-style="{ maxHeight: '400px', overflow: 'auto' }"
                :tree-data="treeSelectData"
                placeholder="请选择父文档"
                tree-default-expand-all
                :replaceFields="{ title: 'name', key: 'id', value: 'id' }"
              >
              </a-tree-select>
            </a-form-item>
            <a-form-item>
              <a-input v-model:value="doc.sort" placeholder="顺序" />
            </a-form-item>
            <a-form-item>
              <div id="content"></div>
            </a-form-item>
          </a-form>
        </a-col>
      </a-row>
    </a-layout-content>
  </a-layout>

  <!-- <a-modal
    title="文档表单"
    :visible="modalVisible"
    :confirm-loading="modalLoading"
    @ok="handleModalOk"
    @cancel="handleModelCancel"
  >
    
  </a-modal> -->
</template>

<script lang="ts">
import { createVNode, defineComponent, onMounted, ref } from "vue";
import axios from "axios";
import { message, Modal } from "ant-design-vue";
import { Tool } from "@/util/tool";
import { useRoute } from "vue-router";
import ExclamationCircleOutlined from "@ant-design/icons-vue/ExclamationCircleOutlined";
import E from "wangeditor";

export default defineComponent({
  name: "AdminDoc",
  setup() {
    const route = useRoute();
    console.log("route :>> ", route);
    const param = ref();
    param.value = {};
    const docs = ref();
    const loading = ref(false);

    const columns = [
      {
        title: "名称",
        dataIndex: "name",
        slots: { customRender: "name" },
      },
      {
        title: "Action",
        key: "action",
        slots: { customRender: "action" },
      },
    ];

    /**
     * 一级文档树，children属性就是二级文档
     * [{
     *   id: "",
     *   name: "",
     *   children: [{
     *     id: "",
     *     name: "",
     *   }]
     * }]
     */
    const level1 = ref(); // 一级文档树，children属性就是二级文档
    level1.value = [];

    const handleQuery = () => {
      loading.value = true;
      // 清空现有数据，防止编辑完，保存成功后，再次点击编辑，还是修改前数据
      level1.value = [];
      axios.get("/doc/all").then((response) => {
        loading.value = false;
        const data = response.data;
        if (data.success) {
          docs.value = data.content;
          console.log("原始数组 :>> ", docs.value);

          level1.value = [];
          level1.value = Tool.array2Tree(docs.value, 0);
          console.log("树形结构 :>> ", level1);
        } else {
          message.error(data.message);
        }
      });
    };

    /**
     * 表单
     */
    // 因为树选择组件的属性状态，会随当前编辑的节点而变化，所以单独声明一个响应式变量
    const treeSelectData = ref();
    treeSelectData.value = [];
    const doc = ref();
    doc.value = {};
    const modalVisible = ref(false);
    const modalLoading = ref(false);
    // 创建富文本
    const editor = new E("#content");
    editor.config.zIndex = 0;

    // OK
    const handleSave = () => {
      modalLoading.value = true;
      doc.value.content = editor.txt.html();
      axios.post("/doc/save", doc.value).then((response) => {
        modalLoading.value = false;
        // data = 后台返回的CommonResp
        const data = response.data;
        if (data.success) {
          // modalVisible.value = false;
          message.success("保存成功！");

          // 重新加载列表
          handleQuery();
        } else {
          message.error(data.message);
        }
      });
    };

    // Cancel
    const handleModelCancel = () => {
      modalVisible.value = false;
    };

    /**
     * 将某节点及其子孙节点全部置为disabled
     */
    const setDisable = (treeSelectData: any, id: any) => {
      // console.log(treeSelectData, id);
      // 遍历数组，即遍历某一层节点
      for (let i = 0; i < treeSelectData.length; i++) {
        const node = treeSelectData[i];
        if (node.id === id) {
          // 如果当前节点就是目标节点
          console.log("disabled", node);
          // 将目标节点设置为disabled
          node.disabled = true;

          // 遍历所有子节点，将所有子节点全部都加上disabled
          const children = node.children;
          if (Tool.isNotEmpty(children)) {
            for (let j = 0; j < children.length; j++) {
              setDisable(children, children[j].id);
            }
          }
        } else {
          // 如果当前节点不是目标节点，则到其子节点再找找看。
          const children = node.children;
          if (Tool.isNotEmpty(children)) {
            setDisable(children, id);
          }
        }
      }
    };

    const deleteIds: Array<string> = [];
    const deleteNames: Array<string> = [];
    /**
     * 查找整根树枝
     */
    const getDeleteIds = (treeSelectData: any, id: any) => {
      // console.log(treeSelectData, id);
      // 遍历数组，即遍历某一层节点
      for (let i = 0; i < treeSelectData.length; i++) {
        const node = treeSelectData[i];
        if (node.id === id) {
          // 如果当前节点就是目标节点
          console.log("delete", node);
          // 将目标ID放入结果集ids
          // node.disabled = true;
          deleteIds.push(id);
          deleteNames.push(node.name);

          // 遍历所有子节点
          const children = node.children;
          if (Tool.isNotEmpty(children)) {
            for (let j = 0; j < children.length; j++) {
              getDeleteIds(children, children[j].id);
            }
          }
        } else {
          // 如果当前节点不是目标节点，则到其子节点再找找看。
          const children = node.children;
          if (Tool.isNotEmpty(children)) {
            getDeleteIds(children, id);
          }
        }
      }
    };

    /**
     * 内容查询
     */
    const handleQueryContent = () => {
      axios.get("/doc/find-content/" + doc.value.id).then((response) => {
        const data = response.data;
        if (data.success) {
          editor.txt.html(data.content);
        } else {
          message.error(data.message);
        }
      });
    };

    /**
     * 编辑
     */
    const edit = (record: any) => {
      // 清空富文本框
      editor.txt.html("");
      modalVisible.value = true;
      doc.value = Tool.copy(record);
      handleQueryContent();

      // 不能选择当前节点及其所有子孙节点，作为父节点，会使树断开
      treeSelectData.value = Tool.copy(level1.value);
      setDisable(treeSelectData.value, record.id);

      // 为选择树添加一个"无"
      treeSelectData.value.unshift({ id: 0, name: "无" });
    };

    /**
     * 新增
     */
    const add = () => {
      // 清空富文本框
      editor.txt.html("");
      modalVisible.value = true;
      doc.value = {
        ebookId: route.query.ebookId,
      };

      treeSelectData.value = Tool.copy(level1.value) || [];

      // 为选择树添加一个"无"
      treeSelectData.value.unshift({ id: 0, name: "无" });
    };

    /**
     * 删除
     */
    const handleDelete = (id: number) => {
      // 清空数组，否则多次删除时，数组会一直增加
      deleteIds.length = 0;
      deleteNames.length = 0;

      getDeleteIds(level1.value, id);

      Modal.confirm({
        title: "重要提醒",
        icon: createVNode(ExclamationCircleOutlined),
        content:
          "将删除：【" +
          deleteNames.join("，") +
          "】删除后不可恢复，确认删除？",
        onOk() {
          // console.log(ids)
          axios
            .delete("/doc/delete/" + deleteIds.join(","))
            .then((response) => {
              const data = response.data; // data = commonResp
              if (data.success) {
                // 重新加载列表
                handleQuery();
              } else {
                message.error(data.message);
              }
            });
        },
      });
    };

    onMounted(() => {
      handleQuery();

      editor.create();
    });

    return {
      param,
      // docs,
      level1,
      columns,
      loading,
      handleQuery,

      edit,
      add,

      doc,
      modalVisible,
      modalLoading,
      handleSave,
      handleModelCancel,

      handleDelete,

      treeSelectData,
    };
  },
});
</script>

<style scoped>
img {
  width: 50px;
  height: 50px;
}
</style>
